diff --git a/cmd/agent/main.go b/cmd/agent/main.go
index 180c067..0a2c86b 100644
--- a/cmd/agent/main.go
+++ b/cmd/agent/main.go
@@ -398,6 +398,7 @@ func doTask(task *pb.Task) {
 		handleNATTask(task)
 		return
 	case model.TaskTypeKeepalive:
+		return
 	default:
 		println("不支持的任务：", task)
 		return